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the "ask crazychemgirl a question" thread

Why do two relatively mundane and stable metals like iron oxide and aluminium powder produce so much heat when ignited?
 
Last edited:
Raven_Timothy said:
Why do two relatively mundane and stable metals like iron oxide and aluminium powder produce so much heat when ignited?
Click to expand...

the reaction is Fe2O3 + 2 Al → 2 Fe + Al2O3 which releases a large amount of heat.. aluminum forms stronger bonds with oxygen than iron. The breaking and forming of the bonds gives off the heat in an exothermic reaction... this is why these materials are commonly used for welding and fireworks.

Raven_Timothy said:
What do slightly green bananas peels off gas?
Click to expand...

slightly green banana peels off gas? I'm not sure what you're asking here.

Sean said:
Exothermic reaction.
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wow, I didn't know your name was crazychemgirl (or chemgirljaime)

Raven_Timothy said:
Thank you I've been looking for that word for three days.
Click to expand...

exothermic - releases heat
endothermic - requires heat
 
Sean said:
It's not. It's just that not having to Google the answer means I can post faster.
Click to expand...

lol, I didn't have to google the answer.... I just don't always check this thread every 2 seconds.. sometimes I'm awol for awhile.
 
If you take slightly green bananas and peel the. Then take the peels and put them in a zip lock bag. Vacuum the air out. The next day the bag will have some clear gas in it. The bag should NOT be opened near your face. The gas displaces the oxygen...

So what is that gas?
 
Raven_Timothy said:
If you take slightly green bananas and peel the. Then take the peels and put them in a zip lock bag. Vacuum the air out. The next day the bag will have some clear gas in it. The bag should NOT be opened near your face. The gas displaces the oxygen...

So what is that gas?
Click to expand...

the gas is ethylene gas, which is produced to ripen the fruit.
 
Raven_Timothy said:
If you take slightly green bananas and peel the. Then take the peels and put them in a zip lock bag. Vacuum the air out. The next day the bag will have some clear gas in it. The bag should NOT be opened near your face. The gas displaces the oxygen...

So what is that gas?
Click to expand...

crazychemgirl said:
the gas is ethylene gas, which is produced to ripen the fruit.
Click to expand...

Do you think inhaling a ziplock full of ethylene gas will make you do anything other than cough a couple of times?
 
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